{"id":"000867192","type":"article","title":"A new variant of the copper tetarteron with \"jeweled cross\" of Alexius I Comnenus","publisher":"Νομισματικό Μουσείο Αθηνών","publisher-place":"","pages":"483-489","container-title":"","author":[{"family":"Zervos","given":"Orestes H."}],"issued":{"raw":"2009"}}